190616009 has 2 divisors, whose sum is σ = 190616010. Its totient is φ = 190616008.

The previous prime is 190616003. The next prime is 190616021. The reversal of 190616009 is 900616091.

It is a happy number.

190616009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189888400 + 727609 = 13780^2 + 853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190616009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190616003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95308004 + 95308005.

It is an arithmetic number, because the mean of its divisors is an integer number (95308005).

Almost surely, 2^190616009 is an apocalyptic number.

It is an amenable number.

190616009 is a deficient number, since it is larger than the sum of its proper divisors (1).

190616009 is an equidigital number, since it uses as much as digits as its factorization.

190616009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 190616009 is about 13806.3756648876. The cubic root of 190616009 is about 575.5103310517.

The spelling of 190616009 in words is "one hundred ninety million, six hundred sixteen thousand, nine".